Rice and Black Beans is Cuba! – Yes, if you haven’t eaten this national dish called Arroz con Frijoles yet it’s because you haven’t yet visited Cuba. Why? Well because just about every single meal in Cuba includes this delicious blend of carbohydrates and bean protein. In order to get the thick sauce the Cuban do what is called “Cuajar” which is to leave the beans on a low light for hours until some have disintegrated into the water. Others with less patience use a blender to bring part of the bean batch to a paste form, then add this to the rest, providing the instant mud like texture true Cuban frijoles sauce should have.